Carbureter.



A. WINTON.

- GARBURETEE APPLICATION rum) MAR. 18, 1908.

1,096,482. Patented May 12, 1914.

OA'RBURETER. APPLICATION FILED HAB..18, 1908.

Patented May 12, 1914.

2 SHEETS-SHEET 2- F I f 8 State of Ohio,

ments to be understood. I

5 level, in a manner well understood by those 9 and 7.v Suitableadjustable valves 8 and 9 PATENT OFFICE.

ENGINE AND ALEXANDER. WINTOII, or cLnvELsnn, OHIO, assieuon ro wmron assI muncrnamc'comrnuy, or cnsvsnann, onto.

'cannunmnn.

Specification of Letters Patent. Patent d M 2' 1914 Application filedMarch 18,1908. Serial No. 421,860. v I

T allwhgm o er I 10 and l1,'which have their inner ends in- ,Be it knownthat I, .ALEXANDER lVm'roN, tel'locking, as shown at 12 for permittingcitizen of the United States, residing at i the actuating part 11 tohave a limited Cleveland, in the county of Cuyahoga and movementindependent of the part 10, have invented certain new I whereby thesmall throttle 13. is partially and useful Improvements in Carburetors,of opened before the large throttle 14; is moved. which the following isa specification, re fer- An operating crank-arm 15 is attached to oncebeing bad therein to the accompanying the outer end of the actuatingpart 11, and drawing, a rod 16 is connected therewith, and the rod Thisinvention relates to improvements in 16 will be connected with anydesired opcarbureters, for explosive engines, and is of crating-handle(not shown) in a way well that type disclosed and claimed in my 00-j'understood. Attached to the outer end of pending application, SerialNumber 389,264., the part 10 of the throttle-shaft is an arm in which apuddle or body of gasolene is 17 to the outer end of which one end of amaintained in the air assage for slowly contract-111g spring 18 is'attached, and the moving volumes of air, at which effects a other endof the spring is connected witha spray-action of the gasolene forrapidlystud 19 projecting from the case or cover of movmg volumes f ithe carburetor. A drain cook 20 is located The present improvementpertains cer- X at the'bottom of the chamber 1. tain details ofconstruction which will be 1 Thus far I have described in a generalfully described hereinafter, and particularly 5 way the Sub ect-matterof my said co-pendmg application, and will now describe my pointed outin the claim.

present improvements.

In the accompanying drawings, Figure 1, is a vertical, sectional viewtaken centrally? carbureter here shown, in: which a body or andlongitudinally through one of the air I puddle of volatile fluid a ismaintained for passages. Fig. 2, is a vertical, transverse, i slow speedand slowly-moving volumes of sectional view on the line 2-2 of Fig. 1.air, I find that when the motor is runnin Fig. 3, is a vertical,transverse, sectional l slow and the throttle suddenly fully opene viewon the line 33 of Fig. 1'. Fig. 4, is a a momentary excess of gasoleneoccurs, by transverse, sectional view through the interreason of thesudden increase in the velocity locking joint of the throttle-operatingrod. of the volumes of air passing by the body Fig. 5, is an enlargeddetached perspective of fluid, thus drawing or pulling a consider viewof the throttles and their operating able quantity of raw fluid up intothe outer rod. 5 end 20 of the aspiration pipe or passage. Thecarbureter here shown is of the form J To avoid this momentary excess ofgasolene shown and described in my said co-pending I provide means forrelieving the high vacapplication, and the general construction uumformed by the suddenly-increased speed and operation need be describedin only a v of the volumes of air, which I find prevents general way toenable the present improve- 9 this over-supply of fluid. The form heregeneral, the carbureter comprises a in providing an auxiliary airpassage-way I 21 which has its upper end 22 in open com- I municationwith the exterior of the chamber 1, and its inner end in communicationwith the fluid outlets 6 and 7, through the medium of across-passage-way 23. With this arrangement, when the throttle issuddenly opened wide, and a high vacuum formed, a suflicient amount ofair passes through the air passage 21 into the gasolene are adapted toregulate the flow of the fluid I conduit and largely to assist inatomizing pull on the gasolene, and therefore reduces the quantity ofgasolene supplied, although the amount of air admitted 1s notsuflicientto effect the control of the motor. These In supply chamber 1 in whichis located afloat 2 adapted to control a valve. 3, to maintain withinthe chamber 1 a predetermined fluid skilled in this art. Passing acrossthis-chaml her 1 are the two curved air passages 4 and l 5, which havecommunication with the fluid I within the chamber 1 through the inlets 6I I through the inlets, and the escaping sucked fluid. Athrottle-operating shaft passes transverse the passages i i and, 5, andthis shaft is made of two parts In the type of.

shown for accomplishing this result consists interrupts the vacuumreduce the high vacuum pull as described,

but after the sudden increased vacuum is over and the motor is runninguniformly, then the fluid closes the lower end of the auxiliary airpassage. In other words, the auxiliary air passage is not a constantlyacting air delivery passage, nor is it in fact an air delivery passageto supply air to the gasolene, or to force the gasolene out of the fluidexit, but to the contrary it is only a vacuum reducer and operatesspasmodically for the latter purpose only. This action,

as stated, is due to the small size of the air' passage, and to havingits lower end sufliciently below the oil level and opening into arelatively large passage so that the specific gravity of the oil issuflicient to close the air passage when the motor is working uniformly.

I am aware that carbureters have heretofore had auxiliary air passagesso located that the air passes constantly to the fluid exit, either tofurther carburet the air, or of such size and so located that itconstantly assists in forcing the fluid out of the exlt.

My invention operates differently from either of the foregoing, asheretofore fully set forth, and for the reason explained. Thearrangement is also found to prevent an excess supply of gasolene whenthe motor is run with full open, throttle, thus creating a high vacuum,and. especially in multiple cylinder motors. A vacuum relief is ofespecial value in that form of carbureters which have a maintained oillevel either within, or substantially on a plane with the bottom of theair passage.

While I have here shown my vacuum relief in connection withsubstantially two carbureters formed by the two passageways, and two oilinlets, yet I wish it understood that the invention is capable of usewith a single air passage and a single oil in et.

To prevent the supply ofgas to the motor being absolutely out off by thethrottle, I provide it with a passage, notch or notches, which willpermit a sufficient supply for the minimum speed of the motor whenrunning free. When a motor is running with open throttle, the suction orpassage of the air through the inlet pipe to the carbureter is clearlyaudible, and oftentimes very objectionable. To avoid this disagreeablenoise, I provide a silencer or muflier for the inlet end of the airpassage or passages and in communication therewlth. As here shown,

this mufiler comprises a hood 25, which embraces the inlet end of theair passage, and preferably has connected and movable with it the inletend 26 of said air passage. The hood 25 is made larger than the portion26 to form a surrounding air inlet passage 27, and the end of the inletportion 26 is cut away at 28 for the passage of air between it and theinside of the hood, while the portion 26 has a projection 29 extendinginward from its side wall to which the hood 25 is attached and supportedby a screw or bolt 30. A. deadening lining of felt 31 (or similarmaterial) is located at the inner side of the hood, and covering thislining is a very fine wire gauze 32, which prevents the felt frombecoming shredded and any lint becoming detached and passing into thecarbureter.

I have shown and described my present preferred form of the disclosedimprovement, but I do not limit myself to the exact form here shown, forthat may be varied without departing from the spirit and scope of myinvention.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is z- The combination with a carbureter for explosiveengines having an air passage, of a cup-shaped hood surrounding theinlet end of the air passage, said hood having a lining ofsound-deadening material.

In testimony whereof I affix my signature in presence of two witnesses.

ALEMNDER WINTON.

Witnesses:

I. BAUGHMAN, EDITH Gannon.

